baber/WOPTO huggingface dataset:
Patent GB-639714-A (GB)
Title: Improvements in or relating to the manufacture of 7-dehydrosterol
IPC: C07J9/00
Filed: 1946-10-23
Abstract: 7-Dehydrosterols or their derivatives are prepared by splitting off hydrohalogenic acid, e.g. in the presence of quinoline, dimethylaniline, collidine and triethylamine and preferably with the exclusion of oxygen, from a 7-halogenosterol or a simple functional derivative thereof.  This may be obtained by reacting a halide, e.g. bromoacetamide, dibromoethylurethane, the ethyl ester of bromoimino carbonic acid, bromophthalimide, bromosuccimide and bromourethane, with a sterol or derivative thereof.  In examples: (1) cholesterol acetate is treated with N-bromoacetamide and hydrobromic acid split out of the 7-halogeno-compound produced by means of quinoline; (2) cholesterol stearate is treated with N-bromosuccimide and the product treated with dimethyl aniline or collidine; (3) as in (2) using N-bromoethylurethane instead of N-bromosuccinimide; (4) as in (2) using N-bromophthalimide instead of N-bromosuccimide; (5) cholesterol acetate is brominated with the ethyl ester of N-bromoimino-carbonic acid and hydrobromic acid is split off with dimethylaniline.
Patent GB-1163585-A (GB)
Title: Governors for gas fired appliances
Inventor: LAUNCHBURY ALAN
IPC: G05D16/06
Filed: 1966-07-14
Abstract: 1,163,585. Valves. SPERRYN & CO. Ltd. 16 Oct., 1967 [14 July, 1966], No. 31576/66. Heading F2V. A gas pressure regulator has a closure member 25 connected to diaphragm 45 with lost-motion so that, when cock 53 is opened to allow flow to a burner, the reduction in pressure in outlet chamber 46 allows relative upward movement of the diaphragm until stem 29 abuts the closure member to unseat the latter. Bleed passage 44 allows a small by-pass flow to chamber 46 so that inlet pressure prevails in the latter when cock 53 is closed, and the diaphragm is depressed relative to the closure member against springs 32, 51. The bleed passage also allows a limited flow following opening of the cock 53 and prior to opening of the closure member 25, such a two-stage flow serving to prevent flame lift.
Patent GB-748386-A (GB)
Title: Improvements in or relating to internal combustion engine power plants
Inventor: FELL LOUIS FREDERICK RUDSTON
IPC: B61C9/08
Filed: 1953-11-13
Abstract: 748,386. Power plant. FELL DEVELOPMENTS. Ltd. Oct. 21, 1954 [Nov. 13, 1953], No. 31586/53. Addition to 628,448. Class 7(2) A variable - speed gear having at least two numerically different gear ratios and providing, for a given input, an output in which a higher speed is associated with a lower torque and . a lower speed is associated with a higher torque, is provided in the power unit of the parent Specification between the differential gear planet carrier 8 and the final driven shaft 3. the arrangement being such that power can be transmitted from the carrier 8 alone to the shaft 3 at different speed ratios. In the parent Specification, both input sun wheels 5, 9, powered by the engines via variable-filling fluid couplings, are prevented from reverse rotation by one-way detents but now only one wheel, 9, may be so prevented, by a one-way detent 18 in any part of the transmission 2, 10. 11, 13, 21 between the wheel and its driving engine. As shown, gears 14, 20 fast with the planet carrier 8 mesh gears 15. 16 alternatively clutchable to the shaft 3 by a sliding dog clutch 17, but instead the gear 16 may be. connectible to the shaft 3 by a friction clutch and the gear 15 by a detent similar to the detent 18 and which automatically overruns when the friction clutch is engaged. On starting the driven mechanism such as a locomotive, the engine powering the wheel 5 alone drives through the gears 14, 15, with an overall torque magnification of four to one; the engine powering the wheel 9 then drives also and, due to the step-up ratios of the gears 13, 21 and 14, 15, when the engine torques balance a torque only slightly less than their sum is transmitted to the shaft 3. Finally, the drive through the gears 20, 16 is engaged to halve the torque transmitted to the shaft 3. Reference is made to use in the variable-speed gear of more than one-way detent and of one or more electromagnetic clutches or variable-filling fluid clutches. Where the outputs of two power units are combined by a third differential gear, a variablespeed gear may be provided in the drive to each input sun wheel of this differential gear, or its output planet carrier may drive a single variable-speed gear. The variable-speed gear may be epicyclic and may be followed by further variablespeed, e.g. two-speed gears. Two power units according to the invention may be arranged to drive individual bogies of a locomotive. Specifications 636,808 and 679,576 also are referred to.
Patent GB-208877-A (GB)
Title: Improvements in amusement apparatus
IPC: A63G25/00
Filed: 1922-11-20
Abstract: 208,877. Riehl, H. E. Nov. 20, 1922. Controlling different functions by same handle or lever.-In an amusement vehicle in which an electric motor 27 drives a traction wheel 23 through variable-speed friction disc gearing 22, the friction gearing is controlled by movement of the steering column 27a about a transverse pivot 28. The steering column is connected by a lever 30 and a rod 34 to a sliding frame carrying the friction rollers 22. The steering-shaft 42 is rotated on its axis to steer the vehicle.
Patent GB-849120-A (GB)
Title: Improved method and apparatus for recovery of solid polymer from vaporized solvent
Filed: 1957-10-10
Abstract: Solid olefin polymer, e.g. polyethylene, is separated from a suspension thereof in solvent vapour by contacting this vapour suspension removed from a zone of sub-atmospheric pressure with cold liquid solvents, passing the resulting slurry of the polymer to a liquid-solids separating zone and recovering a polymer-free solvent vapour from the contacting step.  The polymerisation is preferably carried out at low pressure using chromium oxide catalyst.  The concentrated slurry from the separation zone may be returned to the zone of sub-atmospheric pressure while the cold liquid solvent may be applied as a spray.  The cold liquid solvent, which may be the same as the solvent vapour, may be on the surface of a body contained in a second zone of reduced pressure, the polymercontaining vapour being sprayed thereon, a spray of additional cold solvent being introduced to this zone above the surface a stream of polymercontaining liquid solvent being withdrawn from the zone and filtered.  Apparatus for carrying out the process is described.  Specifications 790,195 and 804,641 are referred to.
Patent GB-1425084-A (GB)
Title: Water-resistand fuse-cord
IPC: C06C5/04
Filed: 1973-07-04
Abstract: 1425084 Water-resistant fuse-cord for underwater use IMPERIAL CHEMICAL INDUSTRIES Ltd 3 June 1974 [4 July 1973] 31769/73 Heading F3A A water-resistant fuse-cord for underwater use comprises a core of explosive material encased in a thin supporting tube, the tube being surrounded by at least one layer of textile material, and, for preventing the ingress of water along the textile layer(s) when the fuse-cord is immersed, a water-gellable macromolecular material in contact with the textile material. The macromolecular material, which comprises a polysaccharide, natural gum, sodium alginate or sodium carboxymethyl cellulose, may be carried by a cloth or paper substrate tape 7, disposed between textile layers 4 and 5, or directly surrounding the explosive core 1 instead of a paper tube 2. Alternatively, the macromolecular material can be incorporated in the textile yarns 4 and 5 without a substrate tape. The macromolecular material is also applied to a central textile yarn 3. The explosive core 1 comprises PETN waterproofed with silicone, guar gum, or a salt of carboxymethyl cellulose. The fuse-cord is completed by a waterproof sheath 6 of plastics material. The yarns 3, 4 and 5 consist of polypropylene.
Patent GB-365211-A (GB)
Title: Manufacture of organic mercury compounds
IPC: C07F3/14
Filed: 1930-10-23
Abstract: Organo-mercury compounds are prepared by treating a xanthine derivative containing an unsaturated side chain with a mercury salt. The products, which contain the mercury compound attached to the carbons of the former double bond in the side chain, possess therapeutic properties.  Examples are given of the treatment of 1-allyltheobromine, 7-allyltheophylline, 1-allylmethyltheobromine, and 7-allylmethyltheophylline with mercuric acetate, and of 1-allyltheobromine with mercuric chloride.  The conversion of the mercuric acetate compounds of 7-allyltheophylline and 1-allylmethyltheobromine with sodium chloride into the corresponding mercuric chloride compounds is also described.  Xanthine derivatives.--1-Allylmethyltheobromine and 7-allylmethyltheophylline are prepared by interaction of the sodium compounds of theobromine and theophylline respectively with allylmethyl bromide.
Patent GB-803139-A (GB)
Title: Improvements in or relating to dry gas meters
Inventor: BARNES HUGH VERNON
IPC: G01F15/14
Filed: 1955-11-10
Abstract: 803,139. Making dry gas meters; soldering. RADIATION, Ltd. Nov. 12, 1956 [Nov. 12, 1955], No. 32213/55. Classes 83 (2) and 83 (4). In a dry gas meter having metal casing &c. parts, which it may be desired to separate, united by solder in a joint, one of the parts embodies a shallow channel, which is abutted by the extreme edge of a curved marginal portion of the other part, the channel and the marginal portion being joined by the solder, the arrangement being such that the area of abutment between the two parts adjacent to a region in which there is capillary attraction for the solder when molten between the channel and the marginal portion, is kept to a minimum. The rear pressing 2 of a meter casing has a shallow U-channel 3 into which the curved flange 4 of a front pressing 1 is inserted with the extreme edge of the flange 4 in contact with the channel in the median plane of the channel. With the channel in a horizontal plane solder is run into it to partly or wholly fill it. The casing encloses a meter mechanism including bellows chambers, valves and operating gear therefor. Soldering may be effected by melting a thread of solder in the channel by high-frequency induction.
Patent GB-1359205-A (GB)
Title: Method and apparatus for recovering pure water from an aqueous salt solution
IPC: B01D3/06
Filed: 1971-07-08
Abstract: 1359205 Distillation apparatus, multipleeffect type; desalination of water SASAKURA ENG CO Ltd 8 July 1971 [8 July 1970] 32219/71 Heading BIB Distillation apparatus, suitable for producing pure water from an aqueous salt solution (e.g. sea water) or from waste water, comprises superposed units 2a, 2b.. each intermediate unit having a bundle of heating tubes 6 and a preheating chamber 10 surrounded by a vapour chamber and, on a partition 32 in the base of the unit, a collecting well 5a, 5b... The interior of the tubes 6 and chamber 10 are in communication with the vapour chamber of the adjacent upper unit, and the outer surfaces of the tubes 6 are supplied with jets 4 of solution from the collecting well of the adjacent upper unit. The uppermost unit is provided with a pipe 13 which is supplied through pipe 27 with heating medium from an outside source. The lowermost unit is provided with a condenser 3 which is connected to a steam ejector 15 for maintaining a decrease in pressure between each unit and the adjacent lower unit. Feed solution is passed from pipeline 17 through condenser 3 and some of it then passes through pipe 19 to the well 21 of the lowermost unit where it mixes with concentrated solution. The mixture is wihdrawn by pump 22, and some of it is discharged through piping 24 while the remainder is passed through the tubes 9 of preheating chamber 10 to the distributing well 5 of the uppermost unit. Some of the mixture is introduced into unit 2c through pipe 16. The steam generated on the outer surface of pipe 13 flows to the tubes 6 of unit 2b and boils the solution flowing over the outer surface of these tubes from jets 4'. This multipleeffect operation is repeated down the apparatus. Pure water distillate passes, with flashing, down the apparatus through jets 12 in wells 11, and is withdrawn from the lowermost unit by pump 28. Each tube 6 and preheating chamber 10 has an exhaust hole 8. The liquid level in each well 5a, 5b.. is kept constant by a float regulator 33. Each jet 12 is provided with a similar regulator.
Patent GB-160905-A (GB)
Title: Improvements relating to apparatus for waving or curling the hair
IPC: A45D2/32
Filed: 1919-12-23
Abstract: 160,905. Kerka, F. Dec. 23, 1919. Hair-curling appliances. - A curler on which hair is wound for waving by a moist heat process comprises a tube e, Fig. 2, into the end of which fits a rotatable plug f, the projecting part of which has flattened faces f<1>, Fig. 1. A rod g is secured to the plug f and turns in two collars h, j, which fit tightly in the tube. e. A coil of wire i is mounted on the rod g with a tight fit, one end being secured to the collar h, the other being free, so that the plug f may be rotated only in the direction opposite to the winding of the coil. In a, modification, the collar may be dispensed with, and the end of the coil secured to the tube. The tress of hair being tied at its roots to the plug f, and wound upon the tube e, further tension may be applied thereto by rotating the plug relatively to the tube. The end e<1> of the tube e is flattened similarly to the plug f, and a number of tubes k, l, Fig. 3, may be provided, each having one open end and one flattened end, so that a curler of any length may be built up. The flattened ends are prevented from rotating in the open ends by a pin k<1> across the latter. Fig. 5 shows a form for the end of the plug f adapted to retain the tape by which the hair is bound.
Patent GB-784412-A (GB)
Title: Improvements in or relating to automatic gear-changing systems
IPC: F16D48/02
Filed: 1954-11-08
Abstract: 784,412. Variable speed gearing. CROUCHER, A. H. Oct. 28, 1955 [Nov. 8, 1954], No. 32272/54. Class 80 (2). In an automatic gear change system operating in response to a combination of speed and torque, the torque is measured by pressure generated in an hydraulic pump system, having a permanent leak, driven by relative rotation of the members of an hydraulic clutch. An engine 1 drives a change speed gear 4 through a clutch 2 connectable to a gear-box shaft 3. The clutch 2 is engaged by hydraulic pressure acting on pistons 26, the pressure being generated by a pump 23 driven by the relative rotation of the clutch members. A leak 28 is provided to ensure slight slip in the clutch and constant pressure generation by the pump. A torque speed integrator 5 is fed with hydraulic pressure from the leak 28 and from speedresponsive means 7, the torque responsive means moving a roller 55, Fig. 3, co-operating with a cam slot in a slide 54, and the speed responsive means moving a slide 51 through link 52 in a direction perpendicular to the movement of the slide 54, These movements are transmitted to a ratchet mechanism 56 which rotates an hydraulic valve 66 through differential gearing to change gear. The clutch 2 is released for gear change by an hydraulic control 32. Manual over-ride of the clutch and gear change is provided by lever 34.
Patent GB-213865-A (GB)
Title: Improvements in tobacco pouches
IPC: A24F23/02
Filed: 1923-12-27
Abstract: 213,865. Rowland, F. E. Dec. 27, 1923. Pouches. - A tobacco pouch is formed with two compartments, between which is a screen through which dust from the tobacco can fall from the tobaccocontaining compartment into another from which it can be emptied. The screen may comprise a lining for an ordinary pouch, part or all of which lining is of gauze-like material. In the pouch shown in Fig. 2 the tobacco compartment a has an inserted bottom portion c of gauze-like material through which dust can fall into the pocket b ; the dust can be emptied through the open mouth of the pocket. In the form shown in Fig. 4 dust can fall through perforations i in the tobacco compartment f into the pocket g, and can be emptied through a slot j, which may have a press-button or similar closure. The pouches may be of oiled silk, leather, or rubber.
Patent GB-851748-A (GB)
Title: Improvements in and relating to high-precision angle measurement
Filed: 1957-10-16
Abstract: 851,748. Measuring angles. VYZKUMNY USTAV OBRABECICH STROJU A OBRABENI. Oct. 16, 1957 [Dec. 21, 1956], No. 32378/57. Class 40 (1). [Also in Group XL (b)] An angle to be measured is represented by the angular displacement of one pick-up head relative to another around a disc which carries a magnetic or optical recording and thereby generates signals in the heads by relative rotation. In Fig. 1, the disc 1 rotates at constant speed and carries on its circumference a magnetic recording of sinusoidal form. The pick-up head 3 is fixed while the head 4 can be rotated through an angle α which is to be measured. The phase difference between the two signals picked up is measured at 5 and this value changes by 360 degrees as the head 4 traverses a distance equal to one wavelergth of the recording. The counter 6 records the number of complete cycles of phase difference and thus gives a coarse reading of the angle, while the phasemeter 5 indicates the fine reading. The time constants of the circuits should be longer than the time of one revolution of the disc, to avoid errors due to irregularities of the disc or of its angular velocity. Further accuracy is obtained by using a plurality of angularly displaced fixed heads picking up from one recorded trace, and a plurality of movable heads picking up from another trace beside the first (Figs. 2 and 3, not shown). The heads of the individual systems are connected in series and the sums of their individual signals passed to the phasemeter. The disc can be stationary and the pickups then rotate in unison with an angular displacement relative to one another which corresponds to the angle to be measured. Alternatively the angle is represented by the angular displacement between two stationary discs which are scanned by two rotating pick-ups. The magnetic recording can be replaced by a photographic record co-operating with photoelectric cells. Specifications 824,653 and 825,482 are referred to.
Patent GB-449739-A (GB)
Title: An improved drying and burning arrangement for the linings of ladles and the like used in steel works
IPC: B22D41/015
Filed: 1935-11-22
Abstract: 449,739. Foundry ladles &c. GUTEHOFFNUNGSHUTTE OBERHAUSEN AKT.- GES., Oberhausen, Rhineland, Germany. Nov. 22, 1935, No. 32465. Convention date, Nov. 22, 1934. [Class 87 (i)] In the drying and firing of the linings of foundry ladles and the like, the heating device is arranged so that it can be rotated about a horizontal axis, so that it may be first used to dry the lining with the ladle in the normal position, and then used to heat the lining with the ladle in the inverted position. The ladle is supported on its trunnions and a cover 2 is secured to it. The cover carries a gas supply pipe 10 delivering to a tube 7 inside which is a concentric tube 6 through which air may be forced bv a blower 4 driven by an electric motor 5. At the end of the tube 6 is a device 8 for imparting a swirling motion to the air. The pipe 10 is connected with the gas supply by a flexible pipe or a coupling capable of axial rotation. When the lining is sufficiently dry, the pipe 10 is disconnected and the ladle swung about its trunnions until it is inverted. The other end of the pipe 10 is then connected to the gas supply and firing proceeded with.
Patent GB-825076-A (GB)
Title: Improvements relating to lockets
IPC: A44C3/00
Filed: 1956-10-25
Abstract: 825,076. Lockets. SHAW, K., SHAW, S., and MORGAN, J., [trading as SHAW BROS.]. Jan 22, 1958 [Oct. 25, 1956], No. 32505/56. Class 43 Two dished, heart shaped casings 5, 6 have the edges rolled over the outer edges of flanged, heart shaped insertions 10, 11. and have cut out parts 8, 9 to accommodate hinge knuckles 15, 16 on the insertions, a pin 7 passing through the hinge knuckles. A detent 17 on one insertion snap engages a slot 18 in the other insertion. The insertion 11 has an eye 22.
Patent GB-521201-A (GB)
Title: Improvements relating to apparatus for setting bowling pins upon the bed of a bowling alley
IPC: A63D5/08
Filed: 1938-11-10
Abstract: 521,201. Skittle atleys. TRIGGS, W. W. (Bowling Patents Managements Corporation). Nov. 10, 1938, No. 32660. [Class 132 (ii)] The invention relates to skittle resetting apparatus of the type in which a vertically movable support carries laterally-movable pin resetting devices. As in Specification 519,929, a carrier 10 has setting devices 11 on its upper side for setting the skittles on the alley bed, and resetting devices 28 on its lower side for lifting and resetting skittles between shots, the means for raising, lowering and turning the carrier 10 being as in the Specification referred to. The setting devices 11 comprise inverted conical guards mounted on suction cup holders 12. When the carrier 10 is lowered to pick up the standing pins 26, the suction is cut off from the system as described in the prior Specification, and the heads of the pins enter openings 20 in the plate 15 and engage conical elements 18 which shift so as to be centred over the pins the heads of which then engage the rubber gaskets 27 inside the suction cups 17 and cause the engagement of the sealing ring 24 with the plate 14. Plate 21 then raises stem 31 as shown in Fig. 6 to bring the parts 41 above member 37, so that suction applied to the casing 29 acting through aperture 22 in plate 21 holds the pin'26. Suction is withheld from those cups which do not engage a pin 26 by the stem 31 remaining in its lower position under.suction effect so that the parts 41 are enclosed in the member 37.
Patent GB-539025-A (GB)
Title: Improvements in or relating to arc-extinguishing arrangements more particularly for electric switches and circuit breakers
IPC: H01H9/34
Filed: 1939-12-22
Abstract: 539,025. Arc-rupturing in switches. GENERAL ELECTRIC CO., Ltd., and BAKER, W. F. Dec. 22, 1939, No. 32753. [Class 38 (v)] The arc formed between the movable and fixed contacts 4, 5 of a contactor is blown by the magnet 3 and cheeks 2 on to runners 6, 7 and thence into a labyrinth at the mouth of the shoot 8. The labyrinth is formed by interleaved projecting fins 11, 12 on opposing parts 9, 10, respectively, which may be of " arcovised Siluminite." Iron plates may be embedded in the fins which, as shown in Fig. 1, taper towards the contacts so that as the arc is driven into the labyrinth, its cross-section is restricted. In Figs. 1 and 2, fins are so shaped that the arc-length is suddenly increased as it assumes a zig-zag shape, but in a modification, Figs. 3-5 (not shown), in which the labyrinth is curved instead of straight, the fins may be shaped to produce a gradual arclengthening. Reference has been directed by the Comptroller to Specification 541,612.